Concluding a quiet week after their last free-agent signing of veteran wide receiver Steve Smith, the Ravens added another piece to their 2014 plans by agreeing to a one-year deal with strong safety Darian Stewart on Friday.

The former St. Louis Rams defensive back is familiar with Baltimore secondary coach Steve Spagnuolo, who was Stewart’s head coach in the first two years of his NFL career. Stewart started six games and played in 13 overall for the Rams last season, making 36 tackles and breaking up five passes.

Stewart is scheduled to arrive in Baltimore to take a physical before signing his contract.

It’s likely that Stewart’s signing is more of a depth move as the Ravens aren’t expected to retain starting strong safety James Ihedigbo, who is reportedly mulling over offers from a few NFC teams. With 2013 first-round pick Matt Elam expected to shift to strong safety, general manager Ozzie Newsome said at the beginning of the offseason that upgrading the free safety spot would be his top defensive priority.

“I talked about a free safety [and] maybe getting a free safety that can be a playmaker,” said Newsome when asked in early January what improvements needed to be made to the defense. “When tipped balls are in the air, guys that can come away with that.”

Stewart received the most extensive playing time of his career during the 2011 season, Spagnuolo’s last year as head coach of the Rams. The University of South Carolina product started 13 games and collected 84 tackles, three sacks, 11 pass breakups, and one interception.

For his career, the 5-foot-11, 214-pound safety has amassed 147 tackles, four sacks, and one interception.

The free safety market has few remaining options as veterans Chris Clemons and Thomas DeCoud could be viewed as reasonable choices but neither profiles as the playmaking safety Newsome covets. Former Bills free safety Jairus Byrd was the best free safety to hit the market earlier this month, but he was quickly signed to a lucrative $56 million contract with the New Orleans Saints on the first day of free agency.

The Ravens may have no choice but to look toward the draft for their answer at free safety with the likes of Alabama’s Ha Ha Clinton-Dix and Louisville’s Calvin Pryor potentially available in the first round and others such as Ed Reynolds of Stanford or Florida State’s Terrence Brooks serving as Day 2 possibilities. Should the Ravens not acquire a free safety, they would likely be forced to move Elam back to free safety and look at the possibility of Stewart at the starting strong safety spot.